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https://www.readbyqxmd.com/read/28941414/synthesis-spectral-and-luminescence-study-crystal-structure-determination-and-dft-calculation-of-binuclear-palladium-ii-complexes
#1
S Seyfi, R Alizadeh, M Darvish Ganji, V Amani
Binuclear palladium(II) complexes with metal-metal (d(8)-d(8)) bonding interaction were synthesized by reactions of the 1-methyl-1H-1,2,3,4-tetrazole-5-thiol (Hmtzt) or a mixture of Hmtzt and 1,3-propanediamine (1,3-pda) ligands. Complex [Pd2(μ-mtzt)4]·2CH3CN (1) was synthesized by the reaction of Pd(OAc)2 with Hmtzt dissolved in acetonitrile and complex [Pd2(μ-mtzt)2(mtzt)2(1,3-pda)] (2) was synthesized by reaction of a mixture of Hmtzt and 1,3-propanediamine (dissolved in methanol) with PdCl2 (dissolved in acetonitrile) and were identified through elemental analysis, IR, UV-Vis, (1)H NMR, luminescence spectroscopy as well as single-crystal X-ray diffraction method...
September 14, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28938405/short-term-high-fat-diet-increases-leptin-activation-of-cart-neurons-and-advances-puberty-in-female-mice
#2
Jade Cabestre Venancio, Lisandra Oliveira Margatho, Rodrigo C Rorato, Roberta Ribeiro Costa Rosales, Lucas Kniess Debarba, Ricardo Coletti, Jose Antunes-Rodrigues, Carol F Elias, Lucila Leico K Elias
Leptin is a permissive factor for puberty initiation, participating as a metabolic cue in the activation of the kisspeptin (Kiss1)-gonadotropin-releasing hormone neuronal circuitry however, it has no direct effect on Kiss1 neurons. Leptin acts on hypothalamic CART neurons, participating in the regulation of energy homeostasis. We investigated the influence of a short-term high-fat diet (HFD) on the effect of leptin on puberty timing. Kiss1-hrGFP female mice received a HFD or regular diet (RD) after weaning at postnatal day 21 (PN21) and were studied at PN28 and PN32...
September 4, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938337/pulse-pressure-is-associated-with-plasma-amyloid-%C3%AE-transport-dysfunction
#3
Yu Jiang, Suhang Shang, Pei Li, Chen Chen, Liangjun Dang, Jin Wang, Kang Huo, Meiying Deng, Jingyi Wang, Qiumin Qu
OBJECTIVE: Increased pulse pressure (PP) has been implicated in the development and progression of Alzheimer's disease in middle-aged and elderly adults. Considering the close relationship between peripheral amyloid-β clearance and brain amyloid-β deposition, we investigated the potential association between PP and plasma amyloid-β transport function. METHODS: In this cross-sectional study, a total of 1118 participants underwent a health assessment and quantification of plasma amyloid-β and amyloid-β transporter expression...
September 21, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28938208/effects-of-process-operating-conditions-on-the-autotrophic-denitrification-of-nitrate-contaminated-groundwater-using-bioelectrochemical-systems
#4
D Cecconet, M Devecseri, A Callegari, A G Capodaglio
Nitrates have been detected in groundwater worldwide, and their presence can lead to serious groundwater use limitations, especially because of potential health problems. Amongst different options for their removal, bioelectrochemical systems (BESs) have achieved promising results; in particular, attention has raised on BES-driven autotrophic denitrification processes. In this work, the performance of a microbial electrolysis cell (MEC) for groundwater autotrophic denitrification, is assessed in different conditions of nitrate load, hydraulic retention time (HRT) and process configuration...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28938133/genetic-polymorphisms-for-19-x-str-loci-of-sichuan-han-ethnicity-and-its-comparison-with-chinese-populations
#5
Guanglin He, Ye Li, Xing Zou, Mengge Wang, Pengyu Chen, Miao Liao, Jin Wu
X-chromosomal short tandem repeats (X-STRs) can be serviced as a complementary tool in forensic deficiency cases and other complicated kinship identification. To investigate the genetic variation of the western Chinese Han population, genetic polymorphisms of 19 X-STR loci (DXS8378, DXS7423, DXS10148, DXS10159, DXS10134, DXS7424, DXS10164, DXS10162, DXS7132, DXS10079, DXS6789, DXS101, DXS10103, DXS10101, HPRTB, DXS6809, DXS10075, DXS10074 and DXS10135) included in the AGCU X19 PCR amplification kit were obtained from 201 Chinese Han individuals (108 females and 93 males) residing in Sichuan province, western China...
September 15, 2017: Legal Medicine
https://www.readbyqxmd.com/read/28937979/molecular-genomic-characterization-of-tick-and-human-derived-severe-fever-with-thrombocytopenia-syndrome-virus-isolates-from-south-korea
#6
Seok-Min Yun, Su-Jin Park, Sun-Whan Park, WooYoung Choi, Hye Won Jeong, Young-Ki Choi, Won-Ja Lee
BACKGROUND: Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne viral disease caused by the SFTS virus (SFTSV) from Bunyaviridae that is endemic in East Asia. However, the genetic and evolutionary characteristics shared between tick- and human-derived Korean SFTSV strains are still limited. METHODOLOGY/PRINCIPAL FINDINGS: In this study we identify, for the first time, the genome sequence of a tick (Haemaphysalis longicornis)-derived Korean SFTSV strain (designated as KAGWT) and compare this virus with recent human SFTSV isolates to identify the genetic variations and relationships among SFTSV strains...
September 22, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28937978/a-new-discrete-dynamic-model-of-aba-induced-stomatal-closure-predicts-key-feedback-loops
#7
Réka Albert, Biswa R Acharya, Byeong Wook Jeon, Jorge G T Zañudo, Mengmeng Zhu, Karim Osman, Sarah M Assmann
Stomata, microscopic pores in leaf surfaces through which water loss and carbon dioxide uptake occur, are closed in response to drought by the phytohormone abscisic acid (ABA). This process is vital for drought tolerance and has been the topic of extensive experimental investigation in the last decades. Although a core signaling chain has been elucidated consisting of ABA binding to receptors, which alleviates negative regulation by protein phosphatases 2C (PP2Cs) of the protein kinase OPEN STOMATA 1 (OST1) and ultimately results in activation of anion channels, osmotic water loss, and stomatal closure, over 70 additional components have been identified, yet their relationships with each other and the core components are poorly elucidated...
September 22, 2017: PLoS Biology
https://www.readbyqxmd.com/read/28937820/sex-allocation-patterns-across-cooperatively-breeding-birds-do-not-support-predictions-of-the-repayment-hypothesis
#8
Nyil Khwaja, Ben J Hatchwell, Robert P Freckleton, Jonathan P Green
The repayment hypothesis predicts that reproductive females in cooperative breeding systems overproduce the helping sex. Thanks to well-documented examples of this predicted sex ratio bias, repayment has been considered an important driver of variation in sex allocation patterns. Here we test this hypothesis using data on population brood sex ratios and facultative sex allocation from 28 cooperatively breeding bird species. We find that biased sex ratios of helpers do not correlate with production biases in brood sex ratios, contrary to predictions...
October 2017: American Naturalist
https://www.readbyqxmd.com/read/28937675/coherent-singlet-fission-activated-by-symmetry-breaking
#9
Kiyoshi Miyata, Yuki Kurashige, Kazuya Watanabe, Toshiki Sugimoto, Shota Takahashi, Shunsuke Tanaka, Jun Takeya, Takeshi Yanai, Yoshiyasu Matsumoto
Singlet fission, in which a singlet exciton is converted to two triplet excitons, is a process that could be beneficial in photovoltaic applications. A full understanding of the dynamics of singlet fission in molecular systems requires detailed knowledge of the relevant potential energy surfaces and their (conical) intersections. However, obtaining such information is a nontrivial task, particularly for molecular aggregates. Here we investigate singlet fission in rubrene crystals using transient absorption spectroscopy and state-of-the-art quantum chemical calculations...
October 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28937571/practice-bulletin-no-183-postpartum-hemorrhage
#10
(no author information available yet)
Maternal hemorrhage, defined as a cumulative blood loss of greater than or equal to 1,000 mL or blood loss accompanied by signs or symptoms of hypovolemia within 24 hours after the birth process, remains the leading cause of maternal mortality worldwide (1). Additional important secondary sequelae from hemorrhage exist and include adult respiratory distress syndrome, shock, disseminated intravascular coagulation, acute renal failure, loss of fertility, and pituitary necrosis (Sheehan syndrome).Hemorrhage that leads to blood transfusion is the leading cause of severe maternal morbidity in the United States closely followed by disseminated intravascular coagulation (2)...
October 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28937566/practice-bulletin-no-183-summary-postpartum-hemorrhage
#11
(no author information available yet)
Maternal hemorrhage, defined as a cumulative blood loss of greater than or equal to 1,000 mL or blood loss accompanied by signs or symptoms of hypovolemia within 24 hours after the birth process, remains the leading cause of maternal mortality worldwide (1). Additional important secondary sequelae from hemorrhage exist and include adult respiratory distress syndrome, shock, disseminated intravascular coagulation, acute renal failure, loss of fertility, and pituitary necrosis (Sheehan syndrome).Hemorrhage that leads to blood transfusion is the leading cause of severe maternal morbidity in the United States closely followed by disseminated intravascular coagulation (2)...
October 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28937384/nonspecific-granulomatous-prostatitis-in-association-with-eosinophilic-epithelial-metaplasia-and-prostatic-adenocarcinoma
#12
Dorian I Dikov, Maria Stoyanova Koleva, Zhivko K Peshev, Veselin T Belovezhdov
We present the first case of nonspecific granulomatous prostatitis (NSGP) associated with both eosinophilic epithelial metaplasia (EM) in benign glands and prostatic adenocarcinoma (PCa). The patient was a 68-year old man with a history of obstructive prostatic syndrome. After a transurethral resection of the prostate, the histologic analysis revealed NSGP and PCa. EM was seen in benign peri-granulomatous secretory epithelial cells as PAS Diastase positive granular eosinophilic transformation of the apical cell cytoplasm...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937280/lingual-tonsillolith-prevalence-and-imaging-characteristics-evaluated-on-2244-pairs-of-panoramic-radiographs-and-ct-images
#13
Akira Takahashi, Chieko Sugawara, Keiko Kudoh, Yoshiko Yamamura, Go Ohe, Tetsuya Tamatani, Youji Miyamoto
OBJECTIVES: Lingual tonsilloliths are not as well-known to radiologists than palatine tonsilloliths, although they might be common in clinical practice. The aim of this investigation was to clarify the prevalence and imaging characteristics of lingual tonsilloliths using panoramic radiographs and computed tomography (CT) images. SUBJECTS AND METHODS: This study included 2244 patients without pathology at the base of tongue who underwent panoramic radiography and CT of the maxillofacial region...
September 20, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28936961/-effects-of-small-rna-interference-targeting-mammalian-target-of-rapamycin-on-paraquat-induced-pulmonary-fibrosis-in-rats
#14
Wenbin Yang, Xiaoqing Zhao, Ran Liang, Da Chen
OBJECTIVE: To investigate the effects of small RNA interference targeting mammalian target of rapamycin (mTOR) expression on paraquat-induced pulmonary fibrosis in rats. METHODS: Human embryonic kidney cells HEK-293 were cultured in vitro. The mTOR small interfering RNA (mTOR-siRNA) expression plasmid transfection lentivirus was constructed, and non-specific sequence plasmid with no homology to mTOR gene was set as the control. Seventy-two healthy male Sprague-Dawley (SD) rats were randomly divided into normal saline (NS) control group, paraquat model group, mTOR unrelated sequence group, and mTOR-siRNA group, with 18 rats in each group...
September 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28936362/albumin-protein-cleavage-affects-the-wear-and-friction-of-ultra-high-molecular-weight-polyethylene
#15
Yasha Dwivedi, Michel P Laurent, Shravan Sarvepalli, Thomas M Schmid, Markus A Wimmer
It is well established that the total protein concentration and albumin-to-globulin ratio influence the wear of ultra-high molecular polyethylene (UHMWPE, "polyethylene") in joint prostheses. A factor on wear not yet studied, but of possible clinical relevance, is protein cleavage. Such cleavage is expected in the presence of an inflammatory response and as a result of wear processes at the articular interface. The aim of this study was to compare the tribological behavior of polyethylene articulated against an orthopedic wrought CoCrMo alloy for three lubricants: cleaved albumin, uncleaved albumin, and newborn calf serum (control)...
September 2017: Lubricants
https://www.readbyqxmd.com/read/28936161/oxidative-stress-modifies-the-levels-and-phosphorylation-state-of-tau-protein-in-human-fibroblasts
#16
Alejandro Ibáñez-Salazar, Bernardo Bañuelos-Hernández, Ildefonso Rodríguez-Leyva, Erika Chi-Ahumada, Elizabeth Monreal-Escalante, María E Jiménez-Capdeville, Sergio Rosales-Mendoza
Since the tau protein is closely involved in the physiopathology of Alzheimer's disease (AD), studying its behavior in cellular models might lead to new insights on understanding this devastating disease at molecular levels. In the present study, primary cultures of human fibroblasts were established and used to determine the expression and localization of the tau protein in distinct phosphorylation states in both untransfected and tau gene-transfected cells subjected to oxidative stress. Higher immunopositivity to phospho-tau was observed in cell nuclei in response to oxidative stress, while the levels of total tau in the cytosol remained unchanged...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28936068/hydrocephalus-associated-with-large-vestibular-schwannoma-management-options-and-factors-predicting-requirement-of-cerebrospinal-fluid-diversion-after-primary-surgery
#17
A R Prabhuraj, Nishanth Sadashiva, Santhosh Kumar, Dhaval Shukla, Dhananjaya Bhat, Bhagavatula Indira Devi, Sampath Somanna
OBJECTIVE: Obstructive hydrocephalus (HCP) related to vestibular schwannoma occurs in large tumors compressing the fourth ventricle. Symptoms related to HCP are expected to alleviate after resection of the tumor and decompression of the cerebrospinal fluid (CSF) pathways. However, some patients may require permanent cerebrospinal diversion even after surgery due to persistent HCP. In this study, the authors try to find out the factors associated with the requirement of CSF diversion after vestibular schwannoma surgery in cases of persistent HCP...
August 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28935959/the-crystal-structure-of-the-regulatory-domain-of-the-human-sodium-driven-chloride-bicarbonate-exchanger
#18
Carolina M Alvadia, Theis Sommer, Kaare Bjerregaard-Andersen, Helle Hasager Damkier, Michele Montrasio, Christian Aalkjaer, J Preben Morth
The sodium-driven chloride/bicarbonate exchanger (NDCBE) is essential for maintaining homeostatic pH in neurons. The crystal structure at 2.8 Å resolution of the regulatory N-terminal domain of human NDCBE represents the first crystal structure of an electroneutral sodium-bicarbonate cotransporter. The crystal structure forms an equivalent dimeric interface as observed for the cytoplasmic domain of Band 3, and thus establishes that the consensus motif VTVLP is the key minimal dimerization motif. The VTVLP motif is highly conserved and likely to be the physiologically relevant interface for all other members of the SLC4 family...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935857/sensorimotor-computation-underlying-phototaxis-in-zebrafish
#19
Sébastien Wolf, Alexis M Dubreuil, Tommaso Bertoni, Urs Lucas Böhm, Volker Bormuth, Raphaël Candelier, Sophia Karpenko, David G C Hildebrand, Isaac H Bianco, Rémi Monasson, Georges Debrégeas
Animals continuously gather sensory cues to move towards favourable environments. Efficient goal-directed navigation requires sensory perception and motor commands to be intertwined in a feedback loop, yet the neural substrate underlying this sensorimotor task in the vertebrate brain remains elusive. Here, we combine virtual-reality behavioural assays, volumetric calcium imaging, optogenetic stimulation and circuit modelling to reveal the neural mechanisms through which a zebrafish performs phototaxis, i.e...
September 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28935535/effect-of-albumin-on-the-fluorescence-quantum-yield-of-porphyrin-based-agents-for-fluorescent-diagnostics
#20
Vladimir V Zarubaev, Tatyana C Kris'ko, Elelna V Kriukova, Tatyana D Muraviova
BACKGROUND: Among modern methods of diagnostics of tumors, the fluorescent methods are considered ones of the most prospective. Diagnostic agents (DAs) spread throughout the body by the bloodstream, so, the DA molecules are often transported by albumins and can be affected by these proteins. In our study we evaluate the effect of complex formation between bovine serum albumin (BSA) and three fluorescence DA's (Photolon, Photoditazin and Dimegin) on their fluorescent quantum yields. METHODS: Electron absorption spectroscopy and fluorescence spectroscopy were carried out to calculate fluorescence quantum yields of the DAs using Rhodamine 6G as a standard fluorescent dye...
September 18, 2017: Photodiagnosis and Photodynamic Therapy
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